20808-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20808-83-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,0 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20808-83:
(7*2)+(6*0)+(5*8)+(4*0)+(3*8)+(2*8)+(1*3)=97
97 % 10 = 7
So 20808-83-7 is a valid CAS Registry Number.
20808-83-7Relevant articles and documents
Facile conversion of alcohols into N-substituted amides by magnesium hydrogensulfate under heterogeneous conditions
Salehi,Khodaei,Zolfigol,Keyvan
, p. 1947 - 1951 (2007/10/03)
Different classes of alcohols react efficiently with nitriles in the presence of magnesium hydrogensulfate, Mg(HSO4)2, to produce amides in high yields.